Drum washing machine



FIG. 1 is a perspective view of a drum washing machine embodying theinventive ornamental design;

FIG. 2 is a front view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The broken lines depict portions of the drum washing machine that formno part of the claimed design.

CLAIM The ornamental design for a drum washing machine, as shown anddescribed.